Frederic e



(No Model.)

P. E. PUPPER, PAVING ROLLER.

No. 572,447. Patented Dec. 1, 1896.

'wnmessnzs: INVENTOR 6. W liliden'clifiuzfe a9 42;

A-TTORN EYS UNITED STATES PATENT OFFICE.

FREDERIO E. PUFFER, OF NEIVTON, MASSACHUSETTS, ASSIGNOR TO THE\VARREN-SCHARF ASPHALTPAVING COMPANY, OF NEW YORK, N. Y.

PAVING-ROLLER.

SPECIFICATION forming part of Letters Patent No. 572,447, dated December1, 1896.

Application filed June 4,1896. Serial No. 594,338. (No model.)

To all whom, it may concern.-

Be it known that I, FREDERIO E. PUFFER, a citizen of the United States,residing at Newton, in the county of Middlesex and State ofMassachusetts, have invented new and usef ul Improvements inPaving-Rollers, of which tered in uniformly distributing the oil, and ifin excess or unevenly distributed the oil is not only wasted, but anexcessive supply of oil or occasional excessive spots of oil will softenthe pavement or cause soft spots in the pavement. Water has been tried,but to prevent sticking liberal supplies of water must be used, whichtend to excessively or prematurely cool the pavement and preventsatisfactory work.

By this invention oil-jets are thrown by steam-pressure or mingled withsteam against the roller-surface, whereby even distribution of oil'andmoisture is secured and a comparatively minute quantity of oil and steameffects a satisfactory result and the pavement is satisfactorilyfinished.

The invention is set forth in the following specification and claims,and illustrated in the annexed drawings, in which Figure 1 shows a rearelevation of a roller. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is aplan view of Fig. 1.

The roller 1, being driven over the asphalt pavement 2 while the latteris still soft or hot, will smooth the pavement. Extending across theroller is a tube 3 with fine spray or outlet openings 4'. Into this tubeflows oil from cup 5 and the steam from pipe 6 enters pipe 3 and forcesout the oil through openings at in a spray or jets against the roller 1.The

steam and oil together enable a slight quantity of such oil and steam toprevent sticking,

actual test having shown that for satisfactory Work not more than onepint of oil per working-day of ten hours is required for a roller havinga length or contact-line with the pavement of thirty inches. The steamadmitted to jet-pipe 3 is j ust sufficient to cause the jets to strikethe roller-face, and the jetopenings 4: are so small and numerous thatthe entire surface of the roller is lubricated or moistened by the jetsfrom outlets 4. Furthermore, the hot steam mingled with the oil aids inkeeping the roller Warm, or at least avoids cooling of the roller, sothat the contact of the roller with the pavement will not prematurelycool the latter to prevent satisfactory smoothing or leveling. Livesteam for the inlet-pipe 6 has been found most satisfactory.

As the rollers are generally driven by or form part of a steam-engine,steam for the pipe 6 is readily obtained.

That I claim as new, and desire to secure by Letters Patent, is

1. A roller combined with a jet-tube extended across the roller andhaving its jetopening facing the same, said jet-tube having an oil cupor reservoir leading into the tube and a steam-pipe or pressure-inletleading into the tube for expelling the oil therefrom through'thejet-openings substantially as described.

2. The combination with a roller, of a jettube arranged in proximity toand provided with a plurality of jet-openings facing the periphery ofthe roller, means for feeding oil to said tube, and means forintroducing steam to the jet-tube for expelling the oil therefromthrough the jet-openings onto the periphery of the roller, substantiallyas described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses. FREDERIC E. PUFFER. Witnesses:

WM. 0. HAUFF, E. F. KASTENHUBER.

